void hitLeftWall()
    {
        enenmy enemy = null;

        for (int i = width - 1; i > -1; --i)
        {
            for (int j = height - 1; j > -1; --j)
            {
                if (enemies[i, j] != null)
                {
                    enemy      = enemies[i, j].GetComponent <enenmy>();
                    enemy.left = !enemy.left;
                    enemy.enemy_wallcollide = false;
                    enemy.moveDown();
                }
            }
        }
    }
    void hitRightWall()
    {
        enenmy enemy = null;

        for (int i = 0; i < width; i++)
        {
            for (int j = 0; j < height; j++)
            {
                if (enemies[i, j] != null)
                {
                    enemy      = enemies[i, j].GetComponent <enenmy>();
                    enemy.left = !enemy.left;
                    enemy.enemy_wallcollide = false;
                    enemy.moveDown();
                }
            }
        }
    }